US3520757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure printing card
Assignee: Individual
•
Filing: 1967-06-22
•
Granted: 1970-07-14
•
Expires: 1987-06-22
Abstract
No abstract record available.
Inventors
- 👤 Richard Heaney
- 👤 Chester Szymanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
B; B42; B42D; B42D15/00; Y; Y10; Y10S; Y10S428/00; Y10S428/918; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1825796A
Cited
US3014301A
Cited
US2961334A
Cited
US3079271A
Cited
US3247006A
Cited
US3236717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |